With his Aftermath debut, good kid, m.A.A.d city, expected to sell an impressive 240,000 copies first week, Kendrick Lamar is hardly resting on his laurels, performing everywhere from Oakland to Austin, and even finding time to hit the studio with J. Cole for a new song, "The Jig is Up (Dump'N)."

The song, which was also produced by J. Cole, is a taste of what's to come from the duo's long-discussed collaborative project.

"The week is up... Yall did it... AppreciatIon day is TODAY. With that being said. Me and COLE was in the stu lastnight," Kendrick tweeted, before releasing a link to the new song, which you can download below.

"N----s said they thought that good kid gon' flop, or I might go pop/ Or yo' bitch won't drop, knees when my shit drop," Kendrick raps on the track, completely overshadowing J. Cole. "Y'all too infatuated with the fuckin' numbers/ Which make it easy for me to divide and conquer."

Listen to Kendrick Lamar & J. Cole's "The Jig is Up (Dump'N)"

See The BoomBox Exclusive In House Photos of Kendrick Lamar